Improvement in skipping-ropes



G. M. SAVAGE &. C. MACHRIS.

SKIPPING ROPES.

Patented Aug.29,1876

N. PETERS. PHOTO-LITHOGRAPHER, WAHINGYON. D C

UNITED STATES PATENT OFFICE.

GEORGE M. SAVAGE AND CHARLES MACHRIS, OF DETROIT, MICHIGAN.

IMPROVEMENT IN SKIPPlNG-ROPES.

Specification forming part of Letters Patent N o. 181,726, dated August29, 1876; application filed J une 2, 1876.

To all whom it may concern."

Be it known that we, GEORGE M. SAVAGE and CHARLES MAoHRI's, of Detroit,in the county ot' Wayne and State'ol Michigan, have invented an ImprovedSkipping-Rope, 0f which the following is a specification:

Our invention has for its object to provide one of the handles ot' askipping-rope with a counter for registering the number of skips orjumps made by the user; and it consists in a screwrod connected by acrank-eye at its inner end to one end of the rod, and passed through oneof the handles, in which it is rotated at each revolutionof theArope-bight. On the screw-rod is a nut, with an index projecting througha slot in the handle over a graduated plate in said slot, along which ittravels by the rotation of the screw-rod.

Figure l is a perspective view. Fig. 2 is a longitudinal section of theregistering-handle at y y. Fig. 3 is a cross-section of the same at a:x.

In the drawing, A represents a skippin grope, on one end ot' which issleeved a wooden handle, B, in the usual manner. C is a screwthreadedrod, having a crank, a, at its inner end, in the extremity ot' which aneye is turned, to which the other end of the rope is secured. The rod isjournaled through ferrules at the ends of the other handle, B, in whichit is secured by jam-nuts bin such a way as to permit it to rotatefreely. On the rod is a nut, D, having an index, c, projecting into aslot longitudinally cut in said handle, and bent to project over agraduated plate, d, let into an oi'set of said slot. The index-nut beingat one end of the slot, at each revolution of the rope, the rod willrotate and advance the nut one thread, the index-plate being graduatedas many lines to the inch as the screw has threads, and numbered. Theindex will indicate thereon the number of skips made. When the nut isrun up to the other end of the slot the motion of the rope and therotation of the screw should be reversed to run it back.

What we claim as our invention is- The slotted handle B', screw-rod C,indexnut D, and graduated plate d, in combination with a skippingrope,A, for registering the revolutions of the latter, substantially asdescribed.

GEO. M. SAVAGE. CHARLES MACHRIS.

Witnesses:

H. S. SPRAGUE, H. F. EBEETS.

